///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2018 F4HKW                                                      //
// for F4EXB / SDRAngel                                                          //
// using LeanSDR Framework (C) 2016 F4DAV                                        //
//                                                                               //
// This program is free software; you can redistribute it and/or modify          //
// it under the terms of the GNU General Public License as published by          //
// the Free Software Foundation as version 3 of the License, or                  //
//                                                                               //
// This program is distributed in the hope that it will be useful,               //
// but WITHOUT ANY WARRANTY; without even the implied warranty of                //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the                  //
// GNU General Public License V3 for more details.                               //
//                                                                               //
// You should have received a copy of the GNU General Public License             //
// along with this program. If not, see <http://www.gnu.org/licenses/>.          //
///////////////////////////////////////////////////////////////////////////////////

#ifndef DATVCONSTELLATION_H
#define DATVCONSTELLATION_H

#include <sys/time.h>

#include "leansdr/framework.h"
#include "datvscreen.h"

namespace leansdr
{

    static const int DEFAULT_GUI_DECIMATION = 64;

    template<typename T> struct datvconstellation : runnable
    {
      T xymin, xymax;
      unsigned long decimation;
      unsigned long pixels_per_frame;
      cstln_lut<256> **cstln;  // Optional ptr to optional constellation
      DATVScreen *m_objDATVScreen;


      datvconstellation(scheduler *sch, pipebuf< complex<T> > &_in, T _xymin, T _xymax, const char *_name=NULL, DATVScreen * objDATVScreen=NULL) :
      runnable(sch, _name?_name:_in.name),
      xymin(_xymin),
      xymax(_xymax),
      decimation(DEFAULT_GUI_DECIMATION),
      pixels_per_frame(1024),
      cstln(NULL),
      in(_in),
      phase(0),
      m_objDATVScreen(objDATVScreen)
      {

      }

      void run()
      {
        //Symbols

        while ( in.readable() >= pixels_per_frame )
        {
            if ( ! phase )
            {
                m_objDATVScreen->resetImage();

                complex<T> *p = in.rd(), *pend = p+pixels_per_frame;

                for ( ; p<pend; ++p )
                {
                    if(m_objDATVScreen!=NULL)
                    {

                        m_objDATVScreen->selectRow(256*(p->re-xymin)/(xymax-xymin));
                        m_objDATVScreen->setDataColor(256- 256*((p->im-xymin)/(xymax-xymin)),255,0,255);
                    }

                }

                if ( cstln && (*cstln) )
                {
                  // Plot constellation points

                  for ( int i=0; i<(*cstln)->nsymbols; ++i )
                  {
                    complex<signed char> *p = &(*cstln)->symbols[i];
                    int x = 256*(p->re-xymin)/(xymax-xymin);
                    int y = 256 - 256*(p->im-xymin)/(xymax-xymin);

                    for ( int d=-4; d<=4; ++d )
                    {
                        m_objDATVScreen->selectRow(x+d);
                        m_objDATVScreen->setDataColor(y,5,250,250);
                        m_objDATVScreen->selectRow(x);
                        m_objDATVScreen->setDataColor(y+d,5,250,250);
                    }
                  }
                }

                m_objDATVScreen->renderImage(NULL);

            }

            in.read(pixels_per_frame);

            if ( ++phase >= decimation )
            {
                phase = 0;
            }
         }
      }

        //private:
      pipereader< complex<T> > in;
      unsigned long phase;
      //gfx g;

      void draw_begin()
      {
        //g.clear();
        //g.setfg(0, 255, 0);
        //g.line(g.w/2,0, g.w/2, g.h);
        //g.line(0,g.h/2, g.w,g.h/2);
      }

    };

}

#endif // DATVCONSTELLATION_H